Appearance: white crystal

Assay£¨AR): 99% min

Molar absorptivity of iron complex £¨L/cm.mol £©: Min. 1.15 X 10⁴

Dissolution test in ethanol:   qualified

Residue on ignition (as Sulfate) £º 0.1% max.

Moisture£º 8.5-10.0%min